A reduction-treated copper-based catalyst obtained by reducing a copper-based catalyst with hydrogen in the presence of a liquid phase and a process for producing -phenylethyl alcohol, which comprises hydrogenating acetophenone in the presence of the same. The receptacle portion includes a plurality of side walls and a base perpendicular to thereof. The delay module provides a delayed output signal. A c-axis of the hexagonal III-nitride semiconductor is inclined at an angle ALPHA with respect to the normal axis toward an m-axis of the hexagonal III-nitride semiconductor. The comparison is performed between files at the same stage of design, files that correspond to different stages of the design flow, or between top-level and block-level constraint files. A working piston is arranged in the compressed gas housing and is provided with a valve plate which is arranged on the front end of the piston rod thereof for moveable rear closure of the projectile course, wherein the working piston is a movable backward closure element for the working chamber and the piston rod is guided through the partition.